Al Pacino has been signed to play legendary record producer Phil Spector in an HBO feature to be written and directed by David Mamet. Spector was the musical genius who was instrumental in helping some of the best known acts of the 1960s find fame through his famous "Wall of Sound" techniques. The 70 year old Spector, who was always known as much for his eccentric behavior as his talent, is serving a prison sentence for shooting actress Lana Clarkson. Click here for more